/*
 * Created on May 23, 2014
 * Created by Paul Gardner
 * 
 * Copyright 2014 Azureus Software, Inc.  All rights reserved.
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License only.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
 */

package com.aelitis.azureus.core.util;

import java.io.IOException;
import java.io.InputStream;

public class UncloseableInputStream extends InputStream {
    private InputStream is;

    private boolean closed;

    public UncloseableInputStream(InputStream _is) {
        is = _is;
    }

    @Override
    public int read() throws IOException {
        if (closed) {
            throw (new IOException("Stream Closed"));
        }

        return (is.read());
    }

    public int read(byte b[])

    throws IOException {
        if (closed) {
            throw (new IOException("Stream Closed"));
        }

        return (is.read(b));
    }

    public int read(byte b[], int off, int len)

    throws IOException {
        if (closed) {
            throw (new IOException("Stream Closed"));
        }

        return (is.read(b, off, len));
    }

    public void close()

    throws IOException {
        closed = true;
    }

    public long skip(long n)

    throws IOException {
        if (closed) {
            throw (new IOException("Stream Closed"));
        }

        return (is.skip(n));
    }

    public int available()

    throws IOException {
        if (closed) {
            throw (new IOException("Stream Closed"));
        }

        return (is.available());
    }

    public void mark(int readlimit) {
        is.mark(readlimit);
    }

    public void reset()

    throws IOException {
        if (closed) {
            throw (new IOException("Stream Closed"));
        }

        is.reset();
    }

    public boolean markSupported() {
        return (false); // lets say no to prevent interaction with delegated stream...
    }

    public boolean isClosed() {
        return (closed);
    }
}
